The two parameter family of solutions of the DE:y ′′
+16y=0 is y=c 1
​
sin4x+c 2
​
cos4x. Then, the BVP: y ′′
+16y=0,y(0)=4,y ′
(π/4)=−4, has Select one: infinitely many solutions with c 2
​
=4 only one solution with c 1
​
=1 and c 2
​
=4 no solution infinitely many solutions with c 1
​
=1 None of these.